Home / 87,835.78-131,447.49-71,856.10

Finding the Fourth Proportional to 87,835.78, 131,447.49 and 71,856.10

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Solution

The fourth proportional to 87,835.78, 131,447.49 and 71,856.10 is: 107,533.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,835.78 : 131,447.49 = 71,856.10 : x
  2. Step 2: Convert to fraction form
    87,835.78/131,447.49 = 71,856.10/x
  3. Step 3: Cross multiply
    87,835.78x = 131,447.49 × 71,856.10
  4. Step 4: Simplify right side
    87,835.78x = 9,445,303,986.19
  5. Step 5: Solve for x
    x = 9,445,303,986.19/87,835.78
  6. Step 6: Final answer
    x = 107,533.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.